Machines for spreading artificial fertilizers and the like



Sept. 20, 1955 H. VISSERS MACHINES FOR SPREADING ARTIFICIAL F-ERTILIZERS AND THE LIKE 2 Sheets-Sheet 1 Filed Sept. 1, 1953 Sept. 20, 1955 H. VISSERS 2,718,337

MACHINES FOR SPREADING ARTIFICIAL FERTILIZERS AND THE LIKE Sheets-Sheet 2 Filed Sept. 1, 1953 United States Patent O MACHINES FOR SPREADENG ARTIFICIAL FERTILIZERS AND THE LIKE Herbert Vissers, Nieuw Vennep, Netherlands, assignor to C. V. Machinefabriek H. Vissers, Nieuw Vennep, Netherlands, a Dutch company Application September 1, 1953, Serial No. 377,913

Claims priority, application Netherlands September 11, 1952 1 Claim. (Cl. 222-177) This invention relates to a machine for spreading artificial fertilizers and the like, provided with a hopper for the material to be spread, said hopper having discharge orifices at its bottom and end walls directly or indirectly united with the journal of a road Wheel and longitudinal walls which latter at each of their ends are supported against a flanged edge of the end walls of the ho per.

With the known machines of this type for spreading fertilizers the longitudinal walls of the hopper are secured to the end walls by means of bolts. Said construction, however, has the drawback that the bolts rust into their holes under the influence of the mostly humid fertilizer, so that the longitudinal walls of the hopper cannot be removed for cleaning purposes.

The invention has for its object to remove said drawback and to secure a ready removal of the longitudinal walls of the hopper under all circumstances. To this end the longitudinal walls of the hopper are provided with a projection near each end wall and a plate spring or barshaped spring is supported on each end wall, the ends of said spring urging down the longitudinal walls of the hopper on the bottom and against the flanged edges of the end walls, said longitudinal walls being loosely supported on the bottom. If with said construction the springs are removed the longitudinal walls of the hopper are released and may be removed so that also the bottom of the hopper is accessible for cleaning.

The invention will be further described with reference to the accompanying drawing, Fig. 1 of which shows part of a plan View of an embodiment of the machine according to the invention.

Fig. 2 is a vertical cross-section taken on line IIII of Fig. 1 and Fig. 2a is a cross-section of the upper part of a hopper according to a modified embodiment.

On a tubular bar 1 a bracket 3 is secured for each pan or disc 2. A support member 4 is clamped on each end of the bar 1 and the arm 5 of member 4 carries the journal 6 for road wheel 7. To the horizontal arm 8 of the support member 4 the end of a bar 9 of angle shaped section is secured by a bolt 10, said bar extending through the whole width of the machine. Each support member 4 at its inner side is provided with a projection 11 for accommodating a bar 12 of angle shaped section which also extends through the whole width of the machine.

The end walls 13 of the hopper are secured to or united with the support member 4 and provided with flanged edges 14.

The bottom of the hopper consists of plates 15 which at one of their sides are supported on the angle shaped bar 12 and at the other side on a lug 16 secured at the under side of the angle shaped bar 9. The longitudinal walls 17 of the hopper are supported at the bottom on the angle shaped bars 9 and 12 respectively and are embraced by the flanges 14 of the side walls 13. At each end of the longitudinal walls 17 of the hopper a projection 18 is provided on which a spring 24 presses which is supported against a stud 19 secured to the wall 13 and urges the walls on the bottom. The hopper has a hinged cover 20.

At each pan an arm 21 projects from the angle shaped bar 9 for supporting a shaft 22 which above each pan carries blades 23 for spreading the material.

As shown in Fig. 2a the spring 24 may also be bent between three studs 19, 19a. The spring may consist of a leaf spring or a circular bar. The spring may be located in recesses at the circumference of the studs, whereby lateral displacement of the spring is prevented.

What I claim is:

In a machine for spreading artificial fertilizers and the like, a hopper having discharge orifices at its bottom and front, rear and end walls, ground engaging wheels mounted in journals, the latter being united with the said corresponding end walls, the said end walls having flanged edges and the said front and rear walls being supported by the flanged edges of the said end walls, the said front and rear walls being provided with a projection near the said end walls, a bar-shaped spring supported on each corresponding wall and the ends of the said spring pressing on the said projections in order to urge the said front and rear walls onto the bottom and against the flanged edges of the said end walls.

References Cited in the file of this patent UNITED STATES PATENTS 

